Windage yaw prevention composite insulator chain assembly structure and device
By adopting a wind-proof composite insulator string assembly structure on the high-voltage conductor, the problem of wind-flashing in high-voltage conductors in strong wind and sand areas is solved, and the stability and safety of the conductors are improved.
Patent Information
- Application Number
- CN202510078615.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-17
- Publication Date
- 2025-05-16
AI Technical Summary
In strong wind and sand areas, it is difficult to effectively prevent the wind flashover problem of high-voltage conductors, resulting in power interruption and equipment damage.
The wind-proof composite insulator string assembly structure is adopted, including the first and second insulator strings, insulated pull rods and connecting parts. By fixing the high-voltage ends of the high-voltage wire, an arc-shaped wire is formed, and connected to the tower rod through the insulated pull rod, forming a stable triangular structure to resist the impact of wind and sand.
It effectively prevents the occurrence of wind-drift flashover accidents and improves the stability and safety of high-voltage conductors in strong wind and sand environments.
Smart Images
Figure CN120016384A_ABST
Abstract
Description
Technical Field
[0001] The present application belongs to the field of wind deflection prevention of insulators, and in particular relates to an assembly structure and device of a wind deflection prevention composite insulator string. Background Art
[0002] In overhead high-voltage power lines, especially in areas with strong winds and sand, the wind-induced flashover problem of high-voltage lines has always been an important factor affecting the safe and stable operation of the power system. Frequent wind-induced flashover accidents not only lead to power outages, but may also cause serious damage to power grid equipment, causing huge losses to society and the economy.
[0003] Traditional measures to prevent wind deviation of high-voltage conductors mainly include setting the design wind speed value, adding wind and sand counterweights under the suspension clamps of the straight tower, using V-type insulator strings to enhance wind resistance and adjusting and increasing the vertical span, etc. However, the effects of these measures in actual applications are not ideal, especially in strong wind and sand environments, and it is still difficult to effectively prevent wind deviation flashover accidents. Summary of the invention
[0004] The purpose of the present application is to overcome the defects in the above-mentioned prior art and provide a wind-proof composite insulator string assembly structure and device.
[0005] The present application provides a wind-proof composite insulator string assembly structure, comprising: a first insulator string, a second insulator string, a first insulating rod, a second insulating rod, a third insulating rod and a fourth insulating rod;
[0006] The first insulator string and the second insulator string are arranged on both sides of the edge of the cross arm of the tower;
[0007] The outer side of the first insulator string and the outer side of the second insulator string are used to fix the first high-voltage end and the second high-voltage end of the high-voltage wire respectively, and the high-voltage wire between the first high-voltage end and the second high-voltage end passes over the first insulator string and the second insulator string to form an arc-shaped wire;
[0008] The first high-voltage end and the second high-voltage end are respectively connected to one end of the first insulating rod and the second insulating rod, and the other ends of the first insulating rod and the second insulating rod are respectively fixed to the outside of the tower window of the cross arm of the tower pole; one end of the third insulating rod and the fourth insulating rod are respectively connected to the arc-shaped conductor, the other end of the third insulating rod is fixed to the edge of the cross arm of the tower pole, and the other end of the fourth insulating rod is fixed to the inside of the tower window of the cross arm of the tower pole.
[0009] Optionally, the other ends of the first insulating rod and the second insulating rod are respectively fixed to the outside of the tower window of the cross arm of the tower pole, including: the first insulating rod and the second insulating rod are respectively fixed to the cross arm of the tower pole through a connector with adjustable length.
[0010] Optionally, the lengths of the first insulator string and the second insulator string, and the minimum air gap distance between the first insulator string and the second insulator string are determined according to the voltage level of the high-voltage conductor.
[0011] Optionally, a buffer is provided in the connecting member.
[0012] Optionally, anti-slip devices are provided at connection points between the third insulating pull rod and the fourth insulating pull rod and the arc-shaped conductor respectively.
[0013] The present application also provides a wind-proof composite insulator string assembly device, comprising: a structural connector and the above-mentioned wind-proof composite insulator string assembly structure;
[0014] The structural connector pre-connects and fixes the first insulator string, the second insulator string, the first insulating rod, the second insulating rod, the third insulating rod and the fourth insulating rod according to the positions in the windproof composite insulator string assembly structure.
[0015] Optionally, the other ends of the first insulating rod and the second insulating rod are respectively fixed to the outside of the tower window of the cross arm of the tower pole, including: the first insulating rod and the second insulating rod are respectively fixed to the cross arm of the tower pole through a connector with adjustable length.
[0016] Optionally, the lengths of the first insulator string and the second insulator string, and the minimum air gap distance between the first insulator string and the second insulator string are determined according to the voltage level of the high-voltage conductor.
[0017] Optionally, a buffer is provided in the connecting member at the fixing points of the first insulating pull rod and the second insulating pull rod to the cross arm of the tower pole respectively.
[0018] Optionally, anti-slip devices are provided at connection points between the third insulating pull rod and the fourth insulating pull rod and the arc-shaped conductor respectively.
[0019] The beneficial effects of this application are:
[0020] The present application provides an anti-wind deviation composite insulator string assembly structure, including: a first insulator string, a second insulator string, a first insulating tie rod, a second insulating tie rod, a third insulating tie rod, and a fourth insulating tie rod; the first insulator string and the second insulator string are arranged on both sides of the edge of the cross arm of the tower pole; the outer sides of the first insulator string and the second insulator string are respectively used to fix the first high-voltage end and the second high-voltage end of the high-voltage wire, and the high-voltage wire between the first high-voltage end and the second high-voltage end crosses over the first insulator string and the second insulator string to form an arc-shaped wire; one ends of the first high-voltage end and the second high-voltage end are respectively connected to the first insulating tie rod and the second insulating tie rod, and the other ends of the first insulating tie rod and the second insulating tie rod are respectively fixed on the outer side of the tower window of the cross arm of the tower pole; one ends of the third insulating tie rod and the fourth insulating tie rod are respectively connected to the arc-shaped wire, the other end of the third insulating tie rod is fixed on the edge of the cross arm of the tower pole, and the other end of the fourth insulating tie rod is fixed on the inner side of the tower window of the cross arm of the tower pole. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 is the front view of the anti-wind deviation composite insulator string assembly structure in the present application;
[0022] Figure 2 is the axonometric view of the anti-wind deviation composite insulator string assembly structure in the present application. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0023] Hereinafter, exemplary embodiments of the present disclosure will be described in more detail with reference to the drawings. Although the exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, the embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.
[0024] Please refer to Figure 1 and Figure 2 As shown, the present application provides an anti-wind deviation composite insulator string assembly structure, which includes: a first insulator string 101, a second insulator string 102, a first insulating tie rod 105, a second insulating tie rod 106, a third insulating tie rod 103, and a fourth insulating tie rod 104.
[0025] The first insulator string 101 and the second insulator string 102 are arranged on both sides of the edge of the cross arm of the tower pole.
[0026] Preferably, the extension lines of the first insulator string 101 and the second insulator string 102 can be set to intersect, and the whole is in an inverted V shape.
[0027] The first insulator string 101 and the second insulator string 102 are side-phase inverted V-shaped strain insulator strings.
[0028] According to the voltage level, determine the length of the inverted V-type tension insulator string and the minimum air gap distance under different voltage levels. At the same time, determine the length of the tension insulator and the specifications of the connecting fittings at both ends.
[0029] To ensure that high-voltage conductors can operate safely and reliably under various conditions such as power frequency voltage, operating overvoltage, and lightning overvoltage, in areas below 1000m above sea level, refer to Table 1 and Table 2 to determine the minimum number of insulators in the tension insulator string and the corresponding insulator string length according to the requirements of operating overvoltage and lightning overvoltage.
[0030] Table 1 Minimum number of insulators and corresponding insulator string length required for different voltage levels
[0031]
[0032] Table 2 Structural parameters of composite insulators at different voltage levels
[0033]
[0034] The first high voltage end 108 of the high voltage conductor is fixed outside the first insulator string 101, and the second high voltage end 109 of the high voltage conductor is fixed outside the second insulator string 102. The high voltage conductor forms an arc between the first insulator string 101 and the second insulator string 102.
[0035] A first insulating rod 105 and a second insulating rod 106 are respectively installed on both sides of the outer side of the tower window.
[0036] One end of the first insulating rod 105 is fixed to one side of the tower window, and the other end is connected to the connection hanging plate of the first high-voltage end 108 of the first insulator string 101. One end of the second insulating rod 106 is fixed to the other side of the tower window, and the other end is connected to the connection hanging plate of the second high-voltage end 109 of the second insulator string 102. The required lengths of the first insulating rod 105 and the second insulating rod 106 are determined according to the width of the tower window and the length of the tension insulator string.
[0037] Buffers are provided at the fixing points of the first insulating pull rod 105 and the second insulating pull rod 106 and the cross arm of the tower pole to absorb the impact force of strong wind and sand on the conductor. The buffers are connectors or spacers made of elastic materials such as rubber.
[0038] By fixing the other end of the insulating rod to the connecting plate of the insulator string, a stable triangle structure is formed between the first insulating rod 105, the second insulating rod 106, the cross arm of the tower, and the first insulator string 101 and the second insulator string 102.
[0039] The first insulating rod 105 and the second insulating rod 106 are fixed to the cross arm of the tower using a connector with adjustable length, so that the length of the insulating rod can be changed by adjusting the connector according to actual needs to optimize the wind deflection protection effect.
[0040] If the first insulating rod 105 and the second insulating rod 106 connecting the insulators are horizontally 30° with the first insulator string 101 and the second insulator string and the hanging point distance is set close to the outside of the tower, the hanging point is the outside of the tower window. The minimum number of insulators required for high-voltage conductors of different voltage levels and the corresponding insulator string lengths are shown in Tables 3 and 4.
[0041] Table 3 Length of insulator string and insulating rod of suspension insulator at different voltage levels
[0042]
[0043] Table 4 Composite insulator structure height and tie rod length at different voltage levels
[0044]
[0045]
[0046] Determine the midpoint of the arc conductor 107, and set the third insulating rod 103 between the midpoint of the arc conductor 107 and the edge of the cross arm of the tower. Fix one end of the third insulating rod 103 at the midpoint of the arc conductor 107, and fix the other end of the third insulating rod 103 on the edge of the cross arm of the tower.
[0047] The length of the third insulating rod 103 is determined and adjusted according to the requirement of the minimum air gap distance.
[0048] Determine the fixed point position inside the tower window, and install the fourth insulating rod 104 inside the tower window. Fix one end of the fourth insulating rod 104 to the fixed point inside the tower window, and fix the other end of the fourth insulating rod 104 to the midpoint of the arc conductor 107 (the same as the midpoint fixed position of the third insulating rod 103).
[0049] The connection points between the third insulating pull rod 103 and the fourth insulating pull rod 104 and the arc-shaped conductor 107 are provided with anti-skid devices, for example, clamping anti-skid devices.
[0050] The length of the fourth insulating rod 104 is determined and adjusted according to the requirement of the minimum air gap distance.
[0051] In areas with an altitude not exceeding 1000m, under strong sandstorm and high wind conditions, the minimum clearance between live parts and tower components (including guy wires, foot nails, etc.) is shown in Table 5.
[0052] Table 5 Minimum air gap values
[0053]
[0054] A third insulating rod 103 and then a fourth insulating rod 104 are installed on the inner side of the tower window and the edge of the cross arm of the tower pole respectively. One end of the two insulating rods are fixed on the inner side of the tower window and the edge of the cross arm of the tower pole respectively, and the other end is fixed at the midpoint of the high-voltage end conductor of the tension insulator string, making it a triangular structure.
[0055] A third insulating rod 103 is arranged between the high-voltage conductor and the edge of the cross arm of the tower and the middle of the cross arm of the tower. One end of the insulating rod is fixed on the high-voltage conductor at the midpoint of the tension insulator, and the other end is fixed on the edge of the cross arm of the tower. The distance between the insulating rod and the cross arm of the tower should be greater than the minimum air gap value, that is, the minimum air gap value required by the power frequency working voltage in Table 5, and the insulating rod should be in a horizontal position with the high-voltage conductor in the middle of the tension insulator;
[0056] If the third insulating rod 103 is vertically at an angle of 30° to the lowest point of the high-voltage conductor and a hanging point is set close to the inside of the pole tower, the hanging point is on the inside of the tower window, and the distance from the cross arm of the tower pole should be equal to the minimum air gap value of the insulating rod in Table 6, and the third insulating rod 103 and the arc conductor 107 should be in the same horizontal vertical plane.
[0057] Table 6 Minimum insulation rod length values
[0058]
[0059] The present application also provides a wind-proof composite insulator string assembly device, comprising: a structural connector and the above-mentioned wind-proof composite insulator string assembly structure;
[0060] The wind-proof composite insulator string assembly structure comprises: a first insulator string 101, a second insulator string 102, a first insulating rod 105, a second insulating rod 106, a third insulating rod 103 and a fourth insulating rod 104; the first insulator string 101 and the second insulator string 102 are arranged on both sides of the cross arm edge of the tower in an inverted V shape; the outer side of the first insulator string 101 and the outer side of the second insulator string 102 are respectively used to fix the first high-voltage end 108 and the second high-voltage end 109 of the high-voltage wire, and the high-voltage wire between the first high-voltage end 108 and the second high-voltage end 109 passes through the first insulator string 101 and The second insulator string 102 forms an arc-shaped conductor 107; the first high-voltage end 108 and the second high-voltage end 109 are respectively connected to one end of the first insulating rod 105 and the second insulating rod 106, and the other ends of the first insulating rod 105 and the second insulating rod 106 are respectively fixed on both sides of the outer side of the tower window of the cross arm of the tower pole; one end of the third insulating rod 103 and the fourth insulating rod 104 are respectively connected to the arc-shaped conductor 107, and the other end of the third insulating rod 103 is fixed to the edge of the cross arm of the tower pole, and the other end of the fourth insulating rod 104 is fixed to the inner side of the tower window of the cross arm of the tower pole;
[0061] The connector pre-connects and fixes the first insulator string 101, the second insulator string 102, the first insulating rod 105, the second insulating rod 106, the third insulating rod 103 and the fourth insulating rod 104 according to the positions in the windproof composite insulator string assembly structure.
[0062] Furthermore, the other ends of the first insulating rod 105 and the second insulating rod 106 are respectively fixed to the outside of the tower window of the cross arm of the tower pole, including: the first insulating rod 105 and the second insulating rod 106 are respectively fixed to the cross arm of the tower pole through a connector with adjustable length.
[0063] Furthermore, the lengths of the first insulator string 101 and the second insulator string 102, and the minimum air gap distance between the first insulator string 101 and the second insulator string 102 are determined according to the voltage level of the high-voltage conductor.
[0064] Furthermore, the first insulating pull rod 105 and the second insulating pull rod 106 are respectively fixed to the cross arm of the tower with a buffer disposed in the connecting member.
[0065] Furthermore, anti-slip devices are provided at the connection points between the third insulating rod 103 and the fourth insulating rod 104 and the arc-shaped conductor 107 .
Claims
1. A windproof composite insulator string assembly structure, characterized in that: include: A first insulator string, a second insulator string, a first insulating rod, a second insulating rod, a third insulating rod and a fourth insulating rod; The first insulator string and the second insulator string are arranged on both sides of the edge of the cross arm of the tower; The outer side of the first insulator string and the outer side of the second insulator string are used to fix the first high-voltage end and the second high-voltage end of the high-voltage wire respectively, and the high-voltage wire between the first high-voltage end and the second high-voltage end passes over the first insulator string and the second insulator string to form an arc-shaped wire; The first high-voltage end and the second high-voltage end are respectively connected to one end of the first insulating rod and the second insulating rod, and the other ends of the first insulating rod and the second insulating rod are respectively fixed to the outside of the tower window of the cross arm of the tower pole; one end of the third insulating rod and the fourth insulating rod are respectively connected to the arc-shaped conductor, the other end of the third insulating rod is fixed to the edge of the cross arm of the tower pole, and the other end of the fourth insulating rod is fixed to the inside of the tower window of the cross arm of the tower pole.
2. The windproof composite insulator string assembly structure according to claim 1, characterized in that: The other ends of the first insulating rod and the second insulating rod are respectively fixed to the outside of the tower window of the cross arm of the tower pole, including: the first insulating rod and the second insulating rod are respectively fixed to the cross arm of the tower pole through a connector with adjustable length.
3. The windproof composite insulator string assembly structure according to claim 1, characterized in that: The lengths of the first insulator string and the second insulator string, and the minimum air gap distance between the first insulator string and the second insulator string are determined according to the voltage level of the high-voltage conductor.
4. The windproof composite insulator string assembly structure according to claim 2, characterized in that: A buffer is arranged in the connecting piece.
5. The windproof composite insulator string assembly structure according to claim 1, characterized in that: Anti-slip devices are provided at the connection points between the third insulating pull rod and the fourth insulating pull rod and the arc-shaped conductor respectively.
6. A windproof composite insulator string assembly device, characterized in that: include: A structural connector and a wind-proof composite insulator string assembly structure as claimed in any one of claims 1 to 5; The structural connector pre-connects and fixes the first insulator string, the second insulator string, the first insulating rod, the second insulating rod, the third insulating rod and the fourth insulating rod according to the positions in the windproof composite insulator string assembly structure.
7. The windproof composite insulator string assembly device according to claim 6, characterized in that: The other ends of the first insulating rod and the second insulating rod are respectively fixed to the outside of the tower window of the cross arm of the tower pole, including: the first insulating rod and the second insulating rod are respectively fixed to the cross arm of the tower pole through a connector with adjustable length.
8. The windproof composite insulator string assembly device according to claim 6, characterized in that: The lengths of the first insulator string and the second insulator string, and the minimum air gap distance between the first insulator string and the second insulator string are determined according to the voltage level of the high-voltage conductor.
9. The windproof composite insulator string assembly device according to claim 7, characterized in that: The fixing points of the first insulating pull rod and the second insulating pull rod to the cross arm of the tower pole are respectively provided with a buffer arranged in the connecting piece.
10. The windproof composite insulator string assembly device according to claim 6, characterized in that: Anti-slip devices are provided at the connection points between the third insulating pull rod and the fourth insulating pull rod and the arc-shaped conductor respectively.